1977266982 has 8 divisors (see below), whose sum is σ = 3954533976. Its totient is φ = 659088992.

The previous prime is 1977266981. The next prime is 1977266983. The reversal of 1977266982 is 2896627791.

It is an interprime number because it is at equal distance from previous prime (1977266981) and next prime (1977266983).

It is a sphenic number, since it is the product of 3 distinct primes.

1977266982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977266981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164772243 + ... + 164772254.

It is an arithmetic number, because the mean of its divisors is an integer number (494316747).

Almost surely, 2^1977266982 is an apocalyptic number.

1977266982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1977266982 is a wasteful number, since it uses less digits than its factorization.

1977266982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329544502.

The product of its digits is 4572288, while the sum is 57.

The square root of 1977266982 is about 44466.4703119103. The cubic root of 1977266982 is about 1255.1292136393.

The spelling of 1977266982 in words is "one billion, nine hundred seventy-seven million, two hundred sixty-six thousand, nine hundred eighty-two".